QueryableMethodTranslatingExpressionVisitor.TranslateGroupBy 方法

定義

命名空間:

Microsoft.EntityFrameworkCore.Query

組件:

Microsoft.EntityFrameworkCore.dll

套件:

Microsoft.EntityFrameworkCore v8.0.0

GroupBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>)在指定的來源上轉譯方法和其他多載。

protected abstract Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression? TranslateGroupBy (Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression source, System.Linq.Expressions.LambdaExpression keySelector, System.Linq.Expressions.LambdaExpression? elementSelector, System.Linq.Expressions.LambdaExpression? resultSelector);

abstract member TranslateGroupBy : Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression * System.Linq.Expressions.LambdaExpression * System.Linq.Expressions.LambdaExpression * System.Linq.Expressions.LambdaExpression -> Microsoft.EntityFrameworkCore.Query.ShapedQueryExpression

Protected MustOverride Function TranslateGroupBy (source As ShapedQueryExpression, keySelector As LambdaExpression, elementSelector As LambdaExpression, resultSelector As LambdaExpression) As ShapedQueryExpression

參數

source

ShapedQueryExpression

套用運算子的成形查詢。

keySelector

LambdaExpression

呼叫中提供的金鑰選取器。

elementSelector

LambdaExpression

呼叫中提供的專案選取器。

resultSelector

LambdaExpression

呼叫中提供的結果選取器。

傳回

ShapedQueryExpression

翻譯後的成形查詢。